﻿using GeoParser;
using Microsoft.VisualStudio.TestTools.UnitTesting;
namespace GeoLibraryTest
{
    /// <summary>
    ///This is a test class for NaturalComparerTest and is intended
    ///to contain all NaturalComparerTest Unit Tests
    ///</summary>
	[TestClass()]
	public class NaturalComparerTest
	{
		private TestContext testContextInstance;

		/// <summary>
		///Gets or sets the test context which provides
		///information about and functionality for the current test run.
		///</summary>
		public TestContext TestContext
		{
			get
			{
				return testContextInstance;
			}
			set
			{
				testContextInstance = value;
			}
		}

		#region Additional test attributes
		// 
		//You can use the following additional attributes as you write your tests:
		//
		//Use ClassInitialize to run code before running the first test in the class
		//[ClassInitialize()]
		//public static void MyClassInitialize(TestContext testContext)
		//{
		//}
		//
		//Use ClassCleanup to run code after all tests in a class have run
		//[ClassCleanup()]
		//public static void MyClassCleanup()
		//{
		//}
		//
		//Use TestInitialize to run code before running each test
		//[TestInitialize()]
		//public void MyTestInitialize()
		//{
		//}
		//
		//Use TestCleanup to run code after each test has run
		//[TestCleanup()]
		//public void MyTestCleanup()
		//{
		//}
		//
		#endregion

		[TestMethod]
		public void CompareStringsTest_NullNull()
		{
			// Arrange
			string s1 = null;
			string s2 = null;
			int expected = 0;
			
			// Act
			int actual = NaturalComparer.CompareStrings(s1, s2);

			// Assert
			Assert.AreEqual(expected, actual);
		}

		[TestMethod]
		public void CompareStringsTest_EmptyEmpty()
		{
			// Arrange
			string s1 = string.Empty;
			string s2 = string.Empty;
			int expected = 0;

			// Act
			int actual = NaturalComparer.CompareStrings(s1, s2);

			// Assert
			Assert.AreEqual(expected, actual);
		}

		[TestMethod]
		public void CompareStringsTest_OddChar()
		{
			// Arrange
			string s1 = "X\u8071";
			string s2 = "Xq";

			// Act
			int actual = NaturalComparer.CompareStrings(s1, s2);

			// Assert
			Assert.IsTrue(actual > 0);
		}

		[TestMethod]
		public void CompareStringsTest_AlphaNumeric()
		{
			// Arrange
			string s1 = "a9";
			string s2 = "a10";
			int expected = -1;

			// Act
			int actual = NaturalComparer.CompareStrings(s1, s2);

			// Assert
			Assert.AreEqual(expected, actual);
		}
	}
}
